Testosterone Replacement Therapy (TRT)

The most common medical use of testosterone is testosterone replacement therapy for men diagnosed with hypogonadism, a condition where the body does not produce adequate testosterone. Symptoms include fatigue, reduced muscle mass, increased body fat, low libido, erectile dysfunction, depression, and reduced bone density. TRT restores testosterone to physiological levels, typically using doses of 50-200mg per week, which is significantly lower than performance-enhancement doses.

In the UK, TRT is available through both the NHS and private clinics. NHS treatment typically uses Sustanon 250 (intramuscular injection every 2-3 weeks), Nebido (testosterone undecanoate injection every 10-14 weeks), or testosterone gel (applied daily). Private clinics may offer additional options including Testosterone Enanthate or Cypionate at optimised dosing schedules with more frequent monitoring.

Muscle-Wasting Conditions

Anabolic steroids have legitimate clinical applications in treating muscle-wasting associated with HIV/AIDS, cancer cachexia, chronic obstructive pulmonary disease (COPD), severe burns, and prolonged immobilisation. In these contexts, anabolic agents help preserve lean body mass, improve strength, and support recovery. The compound Oxandrolone (Anavar) has been particularly studied in burn recovery and HIV-related wasting due to its mild side-effect profile.

Anaemia

Nandrolone Decanoate and Oxymetholone (Anadrol) have historically been used to treat certain forms of anaemia, particularly aplastic anaemia and anaemia associated with chronic kidney disease. These compounds stimulate erythropoiesis (red blood cell production) by increasing erythropoietin production and directly stimulating bone marrow. While largely replaced by synthetic erythropoietin (EPO) in modern practice, some clinical applications persist.

Other Medical Indications

Additional clinical uses include treatment of delayed puberty in adolescent males (short-course testosterone to initiate development), hereditary angioedema (Stanozolol has been used as a preventive treatment), osteoporosis (testosterone and nandrolone improve bone mineral density), and gender-affirming hormone therapy (testosterone for transmasculine individuals).

How Medical Use Differs from Performance Use

The key differences between supervised medical use and non-medical performance use are:

Dosage: Medical TRT typically uses 50-200mg testosterone per week. Performance use commonly involves 300-750mg per week or more, often combined with additional compounds.

Monitoring: Medical patients receive regular bloodwork (every 3-6 months) monitoring testosterone levels, haematocrit, liver function, lipids, and prostate markers. Non-medical users may or may not monitor their health markers. We strongly recommend regular bloodwork regardless of context.

Compound selection: Medical treatment uses pharmaceutical-grade testosterone from licensed manufacturers. Performance use may involve multiple compounds from various sources, with additional risks related to product quality and authenticity. See our guide on counterfeit and unlicensed medicines.

Duration: TRT is typically lifelong. Performance cycles are time-limited but may involve higher-risk compounds and dosing patterns.

When to See a Doctor

If you are experiencing symptoms of low testosterone (persistent fatigue, loss of muscle, weight gain, low mood, reduced libido), consult your GP. A simple blood test can measure your testosterone levels. If levels are below the clinical threshold, you may be referred to an endocrinologist for assessment and potential treatment. Do not self-treat suspected low testosterone without medical evaluation, as symptoms may have other causes that require different treatment.

If you are currently using anabolic steroids and wish to discuss your health, most GPs in the UK will treat the conversation confidentially and without judgment. For more on seeking medical support, see our guide on stopping anabolic steroids and getting medical help.